softmodding failure

Hey I decided to softmodded my wii 2 years ago and now I decide to do all the steps over again (4.2e wii). So at step 1 of the 'Softmod any wii' guide I should install bannerbomb via clicking on the sd-icon at the wii channel menu. But when I do that it goes to the sd-card menu and a pop-up comes saying something like it couldnt install these app. But I'm not sure if the problem is my sd-card, which is a bit old etc., or of it's my installing problem? Sorry for my bad english.

You should direct your question/problems in the topic of the guide in which you are following...

Yes, that is correct.

Before I close this I will tell you that you should follow the section for softmods with homebrew channel already installed, and make sure you do a full format on the card, not quick. If the card fails try another on. OK...closing now.